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Which of the following statements is incorrect about the frog?
(i) Eyes are bulged out and covered by a nictitating membrane that protects them while in water.
(ii) On either side of the eyes a membranous tympanum (ear) receives sound signals.
(iii) The hind limbs end in four digits and they are larger and muscular than fore limbs that end in five digits.
(iv) Feet have webbed digits that help in swimming.
(v) Frogs exhibit sexual dimorphism.
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Important Questions on Structural Organisation in Animals
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The figure given here shows diagrammatic representation of internal organs of frog.
Identify to and select the correct option.
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In a frog, if a hole is punched in the floor of its buccal cavity, then the frog will not die as
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Read the following statements and select the option that correctly fills .
The male frog has a special organ on the throat called __ __.
__ __ membrane is a part of the ear and serves to receive sound waves.
R. Dermis of the frog contains sac-like __ __ glands.
The tongue of a frog is __ __.
__ __ respiration takes place in the lungs on land.
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Which of the following statements is correct about the respiration in frog?
(i) In frog, cutaneous and pulmonary respiration are found.
(ii) A pair of elongated pink hollow lungs are found in thorax.
(iii) During aestivation and hibernation, gaseous exchange takes place through skin.
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Fill up the blanks in the following paragraph by selecting the correct option.
The vascular system of the frog is a well-developed __ __ type. The blood vascular system involves the heart, blood vessels, and blood. The heart has 3 chambers, two atria, and one ventricle, and is covered by a membrane called __ __. A triangular structure called __ __ joins the right atrium.
| (i) | open | conus arteriosus | neurilemma |
| (ii) | closed | sinus venosus | pericardium |
| (iii) | open | neurilemma | conus arteriosus |
| (iv) | closed | pericardium | sinus venosus |
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Identify the incorrect statement about frog.
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The hindbrain in frog consists of
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In frog, mesorchium is a thin fold of membrane extending between
